Collection of audio recordings of folk festival concerts, workshops, and informal events, produced at various locations in Connecticut and Pennsylvania by the Indian Neck Folk Festival from about 1961-2015. The collection also includes papers, photographs, videocassettes, posters, and digital files.

Collection of field recordings made by professor Don Yoder to document various religious sects and religious and secular folk traditions primarily in Pennsylvania and in the northeastern United States. Included are recordings of Pennsylvania German conversation, interviews, hymns, prayers, church services including sermons, folk dance music, humorous songs, and folk festivals. Manuscripts include a few published articles by Don Yoder and various folk festival programs.